API error decoding now uses canonical shared decoder

b8d7f2f: Read API error messages through api-types' canonical decodeApiError instead of a hand-rolled envelope reader. Behavior is unchanged — the nested { error: { code, type, message } } envelope, a legacy flat { message } body, and malformed payloads (which fall back to the HTTP status text) all resolve exactly as before — but the CLI now shares the published wire-shape decoder rather than duplicating it. Bumps @buildinternet/releases-api-types to ^0.35.0 and @buildinternet/releases-core to ^0.25.0 (the versions that first export the errors module).